Muscle PPT Flashcards
Where does the epithelial come from?
Endoderm, ectoderm and mesoderm
Where does the musculoskeletal come from?
Mesoderm
Where does the connective come from?
Mesoderm
Where does the nervous come from?
Ectoderm
What is conglomerate of cells with similar morphology that serve one or several specific functions within an organism?
Tissue
What is the derm origin of muscular tissue?
Mesoderm
What is a cytoplasm that contains myofilaments?
Sarcoplasm
What are myofilaments made of?
Actin and Myosin
What is the result of the sliding of myofilaments?
Contraction = movement
What muscle types do voluntary contractions?
Skeleton, tongue, and eyes
What muscle type do involuntary activity?
Heart, blood vessels, bronchioles, digestive tract
What is the smallest functional component/unit of a muscle skeletal muscle?
Sacromere
Myosin= thin or thick?
Thick
Myosin= A or I?
A
Actin= thick or thin?
Thin
Actin= A or I?
I?
What is needed for myofibers to slide away from each other?
Calcium
What are myofibers surrounded by?
Endomysium
What are groups of myofibers that form a bundle surrounded by?
Perimysium
What are groups of muscle bundles that form a muscle delineated by?
Epimysium
Myosin in skeletal muscle= thick, making it dark or light?
Dark
Actin in skeletal muscle= thick, making it dark or light?
Light
Why is myosin referred to as A?
Anisotropic
What is the name when light is sent in multiple directions?
Anisotropic
Why are actin filaments referred to as I?
Isotopic
What is it called when light is sent in one direction?
Isotopic
How does troponin help in diagnosing cardiac necrosis?
Troponin is released when damage is detected
